NUnit 2.5.8, lots of nunit-agent.exe

Question

Each time I run a test in nunit I get another nunit-agent, which does not exit the test completes, or when the tests are reloaded in nunit or when I restart nunit. This e

Answer 1

I fixed this problem by upgrading to version 2.5.9 (development build). But this has other problems - so Sean's answer is better.

Answer 2

I've just encountered the same problem. The fix is to edit the NUnit.exe.config file and add this:

<startup>
  <requiredRuntime version="4.0.30319" />
</startup>

as a child of the configuration element.

It also fixes another problem which is that you couldn't attach to NUnit from the debugger in order to set breakpoints in your tests.